forked from bartvdbraak/blender
82 lines
2.6 KiB
C
82 lines
2.6 KiB
C
/*
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* Copyright 2011-2013 Blender Foundation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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CCL_NAMESPACE_BEGIN
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ccl_device void svm_node_tex_white_noise(KernelGlobals *kg,
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ShaderData *sd,
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float *stack,
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uint dimensions,
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uint inputs_stack_offsets,
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uint ouptuts_stack_offsets,
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int *offset)
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{
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uint vector_stack_offset, w_stack_offset, value_stack_offset, color_stack_offset;
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svm_unpack_node_uchar2(inputs_stack_offsets, &vector_stack_offset, &w_stack_offset);
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svm_unpack_node_uchar2(ouptuts_stack_offsets, &value_stack_offset, &color_stack_offset);
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float3 vector = stack_load_float3(stack, vector_stack_offset);
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float w = stack_load_float(stack, w_stack_offset);
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if (stack_valid(color_stack_offset)) {
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float3 color;
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switch (dimensions) {
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case 1:
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color = hash_float_to_float3(w);
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break;
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case 2:
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color = hash_float2_to_float3(make_float2(vector.x, vector.y));
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break;
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case 3:
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color = hash_float3_to_float3(vector);
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break;
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case 4:
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color = hash_float4_to_float3(make_float4(vector.x, vector.y, vector.z, w));
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break;
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default:
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color = make_float3(1.0f, 0.0f, 1.0f);
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kernel_assert(0);
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break;
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}
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stack_store_float3(stack, color_stack_offset, color);
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}
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if (stack_valid(value_stack_offset)) {
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float value;
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switch (dimensions) {
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case 1:
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value = hash_float_to_float(w);
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break;
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case 2:
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value = hash_float2_to_float(make_float2(vector.x, vector.y));
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break;
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case 3:
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value = hash_float3_to_float(vector);
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break;
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case 4:
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value = hash_float4_to_float(make_float4(vector.x, vector.y, vector.z, w));
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break;
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default:
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value = 0.0f;
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kernel_assert(0);
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break;
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}
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stack_store_float(stack, value_stack_offset, value);
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}
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}
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CCL_NAMESPACE_END
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